I try 4 different sticks and every USB-Port on the device ... on the other side wenn i copy the original Firmware on any stick and do FN+ESC he will flash just in time with the peep, reset and cmos-reset ... I hope that there still is a possibility for a slic in the firmware
I unpack the provided modfile#6 and replaced the modbios with the original bios from Acer and the update works ... restart , Updatescreen with no peeps, an cute percent ad, at 100% a reboot and the system also have a cmos-clear witch mean the new/old original Bios is updatet correctly